Has an NBA game ever ended90–80?
Yes, 40 times.

Every 90–80 game (40 times)
- December 21, 2018Chicago Bulls 90, Orlando Magic 80
- April 14, 2013New York Knicks 90, Indiana Pacers 80
- April 9, 2013Oklahoma City Thunder 90, Utah Jazz 80
- December 19, 2012Memphis Grizzlies 90, Milwaukee Bucks 80
- February 1, 2009Cleveland Cavaliers 90, Detroit Pistons 80
- January 22, 2009Boston Celtics 90, Orlando Magic 80
- January 10, 2008Detroit Pistons 90, San Antonio Spurs 80
- December 31, 2006Los Angeles Clippers 90, New York Knicks 80
- June 8, 2006Dallas Mavericks 90, Miami Heat 80
- January 6, 2006New Orleans/Oklahoma City Hornets 90, Portland Trail Blazers 80
- January 3, 2006Utah Jazz 90, Los Angeles Lakers 80
- March 13, 2005Seattle SuperSonics 90, New York Knicks 80
- January 27, 2005San Antonio Spurs 90, Sacramento Kings 80
- November 26, 2004Utah Jazz 90, Houston Rockets 80
- April 9, 2004Indiana Pacers 90, New Jersey Nets 80
- December 3, 2003Los Angeles Clippers 90, Cleveland Cavaliers 80
- November 3, 2003Atlanta Hawks 90, New Orleans Hornets 80
- March 22, 2003Denver Nuggets 90, Boston Celtics 80
- March 14, 2003Detroit Pistons 90, Washington Wizards 80
- November 22, 2002Philadelphia 76ers 90, Toronto Raptors 80
- November 1, 2001Detroit Pistons 90, Memphis Grizzlies 80
- March 16, 2001Seattle SuperSonics 90, Chicago Bulls 80
- February 25, 2001Phoenix Suns 90, Utah Jazz 80
- January 27, 2001Toronto Raptors 90, Chicago Bulls 80
- February 28, 1998Charlotte Hornets 90, Orlando Magic 80
- December 25, 1997Chicago Bulls 90, Miami Heat 80
- March 7, 1997Atlanta Hawks 90, Milwaukee Bucks 80
- April 19, 1994San Antonio Spurs 90, Houston Rockets 80
- March 20, 1994Chicago Bulls 90, Minnesota Timberwolves 80
- May 4, 1993Utah Jazz 90, Seattle SuperSonics 80
- November 2, 1990Los Angeles Clippers 90, Sacramento Kings 80
- November 18, 1987Phoenix Suns 90, Utah Jazz 80
- March 31, 1981Chicago Bulls 90, New York Knicks 80
- March 3, 1972Baltimore Bullets 90, Portland Trail Blazers 80
- March 1, 1957Boston Celtics 90, Philadelphia Warriors 80
- December 5, 1953Minneapolis Lakers 90, Syracuse Nationals 80
- December 15, 1951Baltimore Bullets 90, Ft. Wayne Zollner Pistons 80
- November 12, 1951Minneapolis Lakers 90, Baltimore Bullets 80
- December 30, 1950Syracuse Nationals 90, Baltimore Bullets 80
- November 23, 1948Ft. Wayne Zollner Pistons 90, Philadelphia Warriors 80